28226120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:175

約数の個数: 128

約数和(自身を含む): 75479040

約数和(自身を除く): 47252920

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 31, 34, 40, 52, 62, 65, 68, 85, 103, 104, 124, 130, 136, 155, 170, 206, 221, 248, 260, 310, 340, 403, 412, 442, 515, 520, 527, 620, 680, 806, 824, 884, 1030, 1054, 1105, 1240, 1339, 1612, 1751, 1768, 2015, 2060, 2108, 2210, 2635, 2678, 3193, 3224, 3502, 4030, 4120, 4216, 4420, 5270, 5356, 6386, 6695, 6851, 7004, 8060, 8755, 8840, 10540, 10712, 12772, 13390, 13702, 14008, 15965, 16120, 17510, 21080, 22763, 25544, 26780, 27404, 31930, 34255, 35020, 41509, 45526, 53560, 54281, 54808, 63860, 68510, 70040, 83018, 91052, 108562, 113815, 127720, 137020, 166036, 182104, 207545, 217124, 227630, 271405, 274040, 332072, 415090, 434248, 455260, 542810, 705653, 830180, 910520, 1085620, 1411306, 1660360, 2171240, 2822612, 3528265, 5645224, 7056530, 14113060, 28226120]

約数ペア:

[(1, 28226120), (2, 14113060), (4, 7056530), (5, 5645224), (8, 3528265), (10, 2822612), (13, 2171240), (17, 1660360), (20, 1411306), (26, 1085620), (31, 910520), (34, 830180), (40, 705653), (52, 542810), (62, 455260), (65, 434248), (68, 415090), (85, 332072), (103, 274040), (104, 271405), (124, 227630), (130, 217124), (136, 207545), (155, 182104), (170, 166036), (206, 137020), (221, 127720), (248, 113815), (260, 108562), (310, 91052), (340, 83018), (403, 70040), (412, 68510), (442, 63860), (515, 54808), (520, 54281), (527, 53560), (620, 45526), (680, 41509), (806, 35020), (824, 34255), (884, 31930), (1030, 27404), (1054, 26780), (1105, 25544), (1240, 22763), (1339, 21080), (1612, 17510), (1751, 16120), (1768, 15965), (2015, 14008), (2060, 13702), (2108, 13390), (2210, 12772), (2635, 10712), (2678, 10540), (3193, 8840), (3224, 8755), (3502, 8060), (4030, 7004), (4120, 6851), (4216, 6695), (4420, 6386), (5270, 5356)]